Pronunciation: ˌ fo ̇ r-t ē - ' f ī v
Function: noun
Date: circa 1623
1 ― see NUMBER table
2 : a .45 caliber handgun ― usually written .45
3 : a phonograph record designed to be played at 45 revolutions per minute ― usually written 45
– forty-five adjective
– forty-five pronoun, plural in construction